音量调节入参为null处理

mec-im/src/main/java/com/ym/controller/RoomController.java

@@ -164,6 +164,7 @@ public class RoomController{
     @RequestMapping(value = "/device/control", method = RequestMethod.POST)
     public Object controlDevice(@RequestBody ReqDeviceControlData data)
             throws Exception {
+        log.info("device_control: {}",JSONObject.toJSON(data));
         return new BaseResponse<>(roomService.controlDevice(data));
     }